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      1 /*	$NetBSD: g2busvar.h,v 1.7 2012/10/27 17:17:44 chs Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 Marcus Comstedt
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Marcus Comstedt.
     18  * 4. Neither the name of The NetBSD Foundation nor the names of its
     19  *    contributors may be used to endorse or promote products derived
     20  *    from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32  * POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #ifndef _DREAMCAST_G2BUSVAR_H_
     36 #define _DREAMCAST_G2BUSVAR_H_
     37 
     38 #include <sys/bus.h>
     39 
     40 /*
     41  * G2 driver attach arguments
     42  */
     43 struct g2bus_attach_args {
     44 	bus_space_tag_t ga_memt;
     45 };
     46 
     47 /*
     48  * Per-device G2 variables
     49  */
     50 struct g2busdev {
     51 	device_t gd_dev;		/* back pointer to generic */
     52 	TAILQ_ENTRY(g2busdev)
     53 		gd_bchain;		/* bus chain */
     54 };
     55 
     56 /*
     57  * G2 master bus
     58  */
     59 struct g2bus_softc {
     60 	device_t sc_dev;		/* base device */
     61 	struct dreamcast_bus_space sc_memt;
     62 	TAILQ_HEAD(, g2busdev)
     63 		sc_subdevs;		/* list of all children */
     64 };
     65 
     66 void	g2bus_bus_mem_init(struct g2bus_softc *);
     67 void	g2bus_set_bus_mem_sparse(bus_space_tag_t);
     68 
     69 #endif /* _DREAMCAST_G2BUSVAR_H_ */
     70